# coding=utf-8
# 代码文件：chapter1/ch1.7.1-3.py


score = 95
if score >= 90:
    grade = 'A'
elif score >= 80:
    grade = 'B'
elif score >= 70:
    grade = 'C'
elif score >= 60:
    grade = 'D'
else:
    grade = 'F'

print("Grade = " + grade)
